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Life, Unbounded

Life, Unbounded

Discussion and news about planets, exoplanets, and astrobiology

Exomoons ever closer

On a moon, far, far away... One of the biggest thrills of exoplanetary science is seeing how it combines the new and the old, with every discovery bringing startling perspective on the nature of our own very familiar solar system...

October 4, 2011 — Caleb A. Scharf

What next for neutrinos?

To catch a neutrino (MINOS) For a ghostly type of particle, oblivious to even the massive bulk of a star or planet, neutrinos sure can generate a fuss.

September 30, 2011 — Caleb A. Scharf

Life in liquid carbon dioxide

Deep, deep beneath the ocean waves (USGS/NOAA) Well, ok, perhaps it's not life really in liquid carbon dioxide, but as you'll see it's pretty close.

September 20, 2011 — Caleb A. Scharf

The Habitable Planets

An imagined habitable planet (Credit ESO/M. Kornmesser) In 1964 Stephen Dole published a hundred and seventy-four page document for a US Air Force project at the RAND corporation in Santa Monica, California...

September 13, 2011 — Caleb A. Scharf

Saturn, the movie

This extraordinary excerpt is from an upcoming Imax movie that uses Cassini orbiter imagery (NO computer generated images) to create some stunning flybys and flythroughs of the Saturnian system...

September 8, 2011 — Caleb A. Scharf


Deserving of a quick post is a series of extraordinary time-lapse movies showing the complex motion of jets of matter expelled from baby-stars. Followed for more than ten years by the Hubble Space Telescope these systems are some 1,300 light years from us...

September 2, 2011 — Caleb A. Scharf

Pitch Black: The (almost) dark truth about hot Jupiters

Not an exoplanet - but the same principle: Venus transiting the Sun as seen in optical and ultraviolet wavelengths by the TRACE spacecraft (NASA/LMSAL) The first exoplanet discovered around a normal star in 1995 was anything but normal in comparison to our own solar system...

August 22, 2011 — Caleb A. Scharf

The X Factor: Solar storms and life as we know it

Back in February 2011 the Sun underwent a so-called X class solar flare event, prompting the following Life, Unbounded post. I thought I'd bring it out to air again in light of the solar flare events happening right now, and the potential for some disruption of our Earthly activities...

August 9, 2011 — Caleb A. Scharf

Old briny: Mars, water, and the search for life

Let’s get something clear right away, Mars has lots of water on and close to its surface. Over the years we’ve seen an increasing number of measurements and discoveries that indicate very significant reservoirs of martian water...

August 8, 2011 — Caleb A. Scharf

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